Search found 22 matches

by CommodoreJohn
Tue Feb 28, 2012 5:37 pm
Forum: PCjr Hardware
Topic: Monitor adapter
Replies: 17
Views: 10851

Re: Monitor adapter

I thought of chopping off the Berg connector but I was deathly afraid of forgetting which wire was what. Do you recall, was the insulation colored so they could be easily told apart?
by CommodoreJohn
Tue Feb 14, 2012 4:44 pm
Forum: PCjr Hardware
Topic: Monitor adapter
Replies: 17
Views: 10851

Re: Monitor adapter

Heh, I never got around to finishing soldering it, though I do still have the half-completed bundle-o'-wires. Perhaps I should take another crack at it sometime...it'd go fine with my Tandy 1000RL/HD :)
by CommodoreJohn
Thu Jan 13, 2011 2:00 pm
Forum: Programming
Topic: Jr. testers needed.
Replies: 4
Views: 19179

Re: Jr. testers needed.

I should be able to do some testing for you. I don't think I've ever seen the 160x100 display mode - what is the advantage over the 160x200 display mode? If it's the mode I think he's talking about, it's a CGA text-mode hack, so the advantage is that it provides a 16-color bitmap mode on CGA hardwa...
by CommodoreJohn
Tue Jan 11, 2011 6:07 am
Forum: Programming
Topic: Native Development on Small PCs
Replies: 14
Views: 42418

Re: Native Development on Small PCs

Oh, I'm not going to claim that C was never ugly (and I can understand people saying it still is ;)) Still, while really old-school C is definitely a frightening beast (and even K&R is more than a little balky,) it's still something you can use - functionality that the language is missing can (b...
by CommodoreJohn
Mon Jan 10, 2011 6:25 pm
Forum: Programming
Topic: Native Development on Small PCs
Replies: 14
Views: 42418

Re: Native Development on Small PCs

Yeah, I've heard that TP is a whole lot better than straight Wirth Pascal (inasmuch as it's actually not a sanity-shredding exercise in ultra-masochism to write a real, honest-to-God application in it ;P) Still, given my druthers, I'll take a questionable language that was designed for flexibility a...
by CommodoreJohn
Mon Jan 10, 2011 5:36 am
Forum: Programming
Topic: Native Development on Small PCs
Replies: 14
Views: 42418

Re: Native Development on Small PCs

EDIT is definitely easy to use, but it's bulky (especially the geniune article from MS-DOS 5-6 - it's actually just QBASIC locked in editor mode.) And even the lighter versions from Windows 95 and FreeDOS are rather slow. I've heard good things about Turbo Pascal's IDE, but...it's Pascal, man. I'd r...
by CommodoreJohn
Fri Jan 07, 2011 7:05 am
Forum: Programming
Topic: COM memory arena?
Replies: 2
Views: 14880

Re: COM memory arena?

Yes, that's what I'd gathered from another forum. I wasn't intending for a TSR, though - I just wanted to figure out how safely I could write to the area between the end of the program and the top of conventional memory, as I want to use a custom memory manager for game resources, so's I can impleme...
by CommodoreJohn
Wed Sep 15, 2010 8:39 pm
Forum: PCjr Software
Topic: CP/M 86
Replies: 6
Views: 6741

Re: CP/M 86

Ah. Well, if it's just setting the vectors to serve as invalid-interrupt traps, it should work to just change the code to skip INT 48h.
by CommodoreJohn
Wed Sep 15, 2010 6:17 pm
Forum: PCjr Software
Topic: CP/M 86
Replies: 6
Views: 6741

Re: CP/M 86

Hmm. CP/M fortunately keeps all the hardware-specific stuff in its BIOS section (not to be confused with the PC BIOS,) so that should be the only part that needs alteration. Luckily, the source has been public for a while; you can get the CP/M-86 source, plus the source for the PC/XT BIOS, here, imp...
by CommodoreJohn
Mon Aug 30, 2010 12:52 pm
Forum: PCjr General Discussion
Topic: DOSBox 0.74 with improved PCJr compatibility
Replies: 3
Views: 4928

Re: DOSBox 0.74 with improved PCJr compatibility

Yeah, I just noticed this the other day. I use DOSBox more for VGA gaming, but it's always nice to have the option.

BTW, if anyone wants a binary with the annoying splash screen commented out, certain of us may have such a thing on hand ;)